Prepare a road for parametric bridge design

- [Instructor] To prepare a road for Bridge Designwithin Infraworks, we're going to use the same model,it's Bridge Design for Infraworks 2019.Two Model One.But I'd like you to switch to Proposal BridgeDesignOne_One.Now you maybe aware that Infraworks has proposals within itwhich are a way of workingwith multiple versions of the same data.

So for things like bridge design or road design,or urban design, this is really, really powerful stuffbecause what you can do is you can make multiple versionsof the same data within one project,and switch between them,which is what we're doing now.Make sure you've headed over to Bridge View Two,over here, and select the north bridge span.So that's this road over here.

The stack will appear on the right hand side.Now the first thing to remember about bridges in Infraworksis that they need to be applied to component roads.And this is not a component road.I mentioned that when GIS data is importedinto Infraworks it automatically comes in as a design road.To convert it to a component road, it is as simple asright clicking on the road whilst it's selected,and hitting Convert to Component Road.

Infraworks will convert it to a component road,and straight away we will noticethat the stack on the right hand side changes.And the way the road is displayed changes as well.We have things like the function of the road,the speed of the road,we can choose that this is a freeway, it's an arterial,it's a collector.What we're trying to do here is recreate a real world bridgeso much as possible and it is a freewaywith a speed limit of 100 kilometers an hour.

So that's what we'll put in over there.You'll also noticethat we've got the geometry grading limits,and you'll also see that we have all the different typesof attributes that are available with component roads.Next we want to adjust the height of the roadbecause this is not where we want the bridge to be.Obviously we don't want it to be sort of likejust skimming the water.In order to do that,we can make sure that the road is selected,and you'll notice that as we pan and zoom around,we have manipulators here.

Now we have horizontal manipulators,and vertical manipulators.So we want to adjust the heights using these.If I tilt you can see them.If I'm more, in more of a plane view, you can't,so just bear that in mind when you are tryingto manipulate different parts of the road.What you can do is you can grab them,and you can just type in an elevation.So for example over here it's 603.

I'm just going to type in 615, and hit enter.And automatically, my road will be changedalong with the grading,and it tries to adhere to the grading as much as possible.The other side as well, we can grab a manipulator here,and we can type in 610 meters.Now, this is, you know, it's relatively easy,but it's not the most efficient wayof changing the vertical profile of a road.

So, let's try another.Whilst we are in this view, and we have the road selected,right click on the road, and hit Show Profile View.And what will happen is the Profile Viewwill show up at the bottom of the window.So within here we can see the points of vertical interestwhich are these little red triangles.And then we can see there are a numberof different things being displayed.

The only things we really have to worry about hereare the existing ground which is basically the terrain.So you'll notice here that if I switch the existing groundoff, and on again, the terrain and the water,that's the water over there, the terrain is the green,that shows up or disappears depending on what we want it.The finished ground is the road itself.So if I switch that off, you'll notice thatit disappears from the display as well.

And the finished ground is whatwe're going to manipulate here.Now we want the bridgeto be kind of as straight as possible,you know, with no lumps and bumps in between it.And within the Profile View, we can click and dragthe points of vertical interest, or PVIs,that's what we're going to call them,to where we want them to be.So, click this second to left one,which is this one over here,and drag it to around 615 meters,so, more or less,doesn't have to be absolutely exact.

Then, click the second to right onewhich is this one over here,and drag it to about 622 meters.So, let's see, there we go, 622, that'll do.That's close enough.Then, we have one more PVI in the middle over here.And we can drag it to about 620 meters.And we can also move it further awayfrom where it originally was,so we can put it more or less in the middle.

But what we want is more or less a straight line.We don't want any lumps and bumps within our road profile.Now you'll notice here that whilst ourProfile View has changed, the actual road itselfwithin our view has not,that's because we haven't got this Auto Update model on.You'll notice we've got a little,a nice little information panel over theresaying you have one or more edits on the road profile.Move the cursor out of the profile windowto refresh the model.

And that's what we're going to do.So, now, Infraworks will update the model,and you can see that the road is much straighterfrom the start point to the end point.And that's what you want in a bridge.You don't really want a bridgedoing a roller coastery type of thing.So now that we have adjusted our profile,we can close the profile window,and we can start to swap this from a road to a bridge.

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Released

12/13/2018

Autodesk InfraWorks boasts an array of powerful tools that can help you craft and visualize preliminary designs in 3D. In this course, instructor Lynda Sharkey shines a spotlight on one key aspect of an infrastructure design project: bridges. Discover how to leverage this design and engineering program to model and design bridges using real-world data and components in the context of a larger project. Discover how to prepare a road for parametric bridge design, modify a bridge in InfraWorks, add bridge decorations, and share a bridge with Revit. Plus, learn about advanced capabilities such as line girder analysis.